Construction of a new aviation manufacturing facility is underway in Asheville. GE Aviation broke ground on a $ 124 million plant this week. The site will produce CMC's (ceramic matrix composite) materials, for jet engines. The CMCs replace metal and make for a more efficient engine with better combustion and less emissions. "This material has been in development, at least in our research labs for almost years.. It's used in small scale production in rocket loaders.